25288894451 has 2 divisors, whose sum is σ = 25288894452. Its totient is φ = 25288894450.

The previous prime is 25288894363. The next prime is 25288894457. The reversal of 25288894451 is 15449888252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25288894451 is a prime.

It is not a weakly prime, because it can be changed into another prime (25288894457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12644447225 + 12644447226.

It is an arithmetic number, because the mean of its divisors is an integer number (12644447226).

Almost surely, 2^25288894451 is an apocalyptic number.

25288894451 is a deficient number, since it is larger than the sum of its proper divisors (1).

25288894451 is an equidigital number, since it uses as much as digits as its factorization.

25288894451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7372800, while the sum is 56.

The spelling of 25288894451 in words is "twenty-five billion, two hundred eighty-eight million, eight hundred ninety-four thousand, four hundred fifty-one".